I'm a 55 yr old "only child" caring for my 84 yr old Mom who's in a senior's residence. She has rheumatoid arthritis (controlled with meds) and has been diagnosed with mixed dementia (Alzheimer's & vascular). She gets quite confused with days and time of day but her memory seems fine when it comes to calling me to blame me for just about everything . . . she seems mad at the world . . . instead of enjoying my visits with her it has become a burden . . .